May 2010 
 
Fieldbus Technology (Part 5 of 5)
Spitzer and Boyes, LLC 

The Fieldbus Foundation is a non-profit membership organization with a charter to develop and support a set of specifications known as FOUNDATION™ Fieldbus H1 that is based on the ANSI/ISA 50.02 Fieldbus standard. click for more... 

 
Inspector Clou'fleau'
Investigating a DP Meter In Steam Service
Flow Control (May 2009) 

A lawyer recently hired me to investigate the "health" of a differential-pressure flow measurement system in high-pressure steam service. The flowmeter elements were in operation for about 50 years, whereas parts of the secondary equipment were modified over the last few decades. There were "issues" associated with the system, but the impulse tubing was surprisingly correct.  click for more... 

 
Why the Vortex Meter Measured Zero
Flow Control (May 2009) 

Liquid flow of a process fluid into a vessel was visually confirmed. However, a vortex-shedding flowmeter in the feed pipe measured zero flow. The flowmeter was removed from service and was found to function properly on the flow bench in the instrument shop. Which of the following problems could cause this issue to occur? 

A.    High temperature
B.    High pressure
C.    Wiring problem
D.    Configuration problem
E.    Composition change
F.    Steam tracer off 
click for more... 
 
 

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